AngularJS directive - Uppercas

gistfile1.js

angular.module('ng', []).directive('uppercase', function(){
  return {
    require: 'ngModel',
    link: function(scope, element, attrs, modelCtrl){
      // Cria o parsers
      var _uppercase = function(inputValue){
        var uppercased = angular.uppercase(inputValue);
        if(uppercased !== inputValue){
          modelCtrl.$setViewValue(uppercased);
          modelCtrl.$render();
        }
        return uppercased;
      };
      modelCtrl.$parsers.push(_uppercase);
      _uppercase(scope[attrs.ngModel]);
    }
  };
})